Outline

Company Profile

  Company name   OHYO KOKEN KOGYO Co., Ltd.
  Establishment   16-September-1963
  Capital   JPY30,000,000
  Number of employees   66(as of November 2017)
  Offices   
   *Head office (Factory)   1642- 26 Kumagawa Fussa-city Tokyo 197-003 Japan
    *Higashimatuyama Factory   88-77 Shingo Higashimatsuyama-city Saitama 355-0071 Japan
   *Osaka sales office   4-4-63 Miyahara Yodogawa-ku Osaka-city 532-0003 Japan
   *Kyushu works   293 Hondosumachi Tosu-city Saga 841-0026 Japan
  Website   http://www.oken.co.jp

Our History

  * September 1963

  Established OHYO KOKEN KOGYO Co., Ltd.
  It was established at Shinjuku-ku Tokyo, succeeding the
  production of optical materials and radiation detecting
  materials, which were developed by optical laboratory of
  Tokyo University of Education.

  1968


  Established manufacturing know-how of large-scale radiation
  detecting materials

  1976


  Merged radiation instruments division of Tokyo Genshi Kogyo Co.,Ltd.
  Started to supply radiation measuring instruments

  1979

  Moved crystal manufacturing division to Higashimatuyama
  city in Saitama-pref.

  1982

  Moved head office and radiation instruments division
  to Fussa city in Tokyo

  1984

  Enlarged Higashimatuyama Factory

  1985

  Opened Osaka sales office near Shin-Osaka Station

  1990


  Opened Kyushu Works at Tosu-city in Saga-pref.

  1992

  Rebuilt Head office

  1996

  Built second crystal factory at Kodama in Saitama-pref.

  2002


  Expanded crystal manufacturing line at Higashimatuyama factory

  2006


  Constructed new Kyusyu works

  2012


  50th anniversary of company foundation
  Annual sales JPY1,540,000,000